baber/WOPTO huggingface dataset:
Patent GB-1330218-A (GB)
Title: Method of preparing a corrosion-and heat-resistant age- hardenable nickl-chromium refractory carbide alloy
IPC: C22C29/06
Filed: 1971-10-06
Abstract: 1330218 Sintered carbide alloys CHROMALLOY AMERICAN CORP 6 Oct 1971 [21 Oct 1970] 46491/71 Heading C7A and C7D A sintered carbide alloy comprising 30 to 75% by volume of the carbides of titanium, niobium, vanadium and/or tantalum, the balance being a matrix containing, in weight per cent:- and optionally a total of not more than 15% molybdenum, tungsten, niobium, tantalum, zirconium, hafnuim, manganese and silicon the matrix balance being at least 40% nickel, is prepared by compressing the mixture of the powdered ingredients, and liquid-phase sintering in a substantially inert atmosphere. The aluminium is generally introduced in the form of NiA1 powder while the titanium may be added as TiH 2 . In a preferred process, the sintering temperature is up to 100‹C. above the melting point of the matrix alloy; after sintering, the alloy is cooled through the liquidus solidus region at not more than 35‹C/hour. The product may be solution annealed at 1038-1260‹C. hardened in a first step at 732-982‹C. air cooled and then heated to 649-899‹C. The alloy can be machined in the annealed state, and is particularly resistant to acid corrosion in tool and machine part applications.
Patent GB-978180-A (GB)
Title: Improvements in perforators for tape or other record materials
Inventor: FRANKLIN ROY WALTER
IPC: G06K1/12
Filed: 1962-12-12
Abstract: 978,180. Perforating apparatus. CROSFIELD ELECTRONICS Ltd. Dec. 11, 1963 [Dec. 12, 1962], No. 46944/62. Heading B4B. [Also in Divisions B3 and H1] An electrical perforator for a sheet or web used in a datarecording system comprises a perforating electrode 3 mounted to run freely over the web surface, a trigger electrode 7 and a heavycurrent electrode 8 so arranged that, when a low-voltage highenergy source is conncted to the electrode 8, a high voltage applied to the trigger electrode 7 will produce an ionized path between it and the electrode 3 and initiate a high energy discharge between the heavy current and perforating electrodes so as to produce or enlarge a hole in the web or sheet. The web includes aluminium foil 1 backed by a thin transparent polyethylene terephthalate layer, so that only the foil needs to be punctured to permit optical sensing. The perforating electrode, which may be a tungsten wire, is held in jewel bearings 4, 5 so that it is free to fall as wear takes place at its tip and thus maintain contact with the foil. A silicone coolant fluid is applied to the heavy current electrode 8, the electrode 3 and the foil via a capillary tube 13, the liquid also preventing lifting of the perforating electrode and transfer of metal from the foil to it ; the electrode may also be held in place by a spring or an inert gas. Where an insulating sheet is to be perforated, the return contact 10 is formed as a flat plate, and is placed under the sheet.
Patent GB-990012-A (GB)
Title: A semi-conductor rectifier device
IPC: H01L25/07
Filed: 1963-11-28
Abstract: 990,012. Semi-conductor devices. SIEMENS. SCHUCKERTWERKE A.G. Nov. 28, 1963 [Nov. 30, 1962], No. 47137/63. Heading H1K. A rectifier arrangement 1, 2, comprising a semi-conductor rectifier element or a plurality of such elements disposed in one or more stacks, is in good thermal connection (e.g. partly through an electrically insulating foil 5) with a metal holder 4 which is sealed in an electrically insulating housing 6 with which it is in direct thermal contact over an area at least twice as great as the area of good thermal connection between the holder 4 and the rectifier arrangement 1, 2.
Patent GB-1461011-A (GB)
Title: Weaving
IPC: D03D47/40
Filed: 1974-11-01
Abstract: 1461011 Shuttleless looms NUOVO PIGNONE SpA 1 Nov 1974 [6 Nov 1973] 47421/ 74 Heading DIE A selvedge is produced on a woven fabric at one edge by entraining projecting weft ends into a current of air, engaging the entrained weft end on a hooked needle and moving the hooked needle into a succeeding shed to form a selvedge on said edge. The weft threads are inserted by means of a pair of co-operating gripper needles 8, 9 and weft selection takes place by means of a mechanism 7. An inserted weft remains attached to its associated bobbin 5 until it is next selected. As it is taken into the shed after its next selection it passes between cutters 20, 34 and is severed to allow picking. The weft end from the preceeding shed still attached to the fabric is then entrained in a current of air by suction member 45 (Fig. 7) which is given a motion as shown in Fig. 7 by double pivoted levers 52, 58 which causes the weft end to be passed around the hook of an inserting needle 48 which is cam operated to move in paths 64, 65 (Fig. 5) such that the needle initially moves from a position inside the shed to a position outside the shed at which point the suction tube wraps the weft end around the needle hook and then the needle moves back to draw the weft end into the shed.  At the opposite side of the loom each weft end is gripped by a suction tube similar to that at the entry side of the loom. The weft end is then simultaneously cut and clamped by blades 123, 124 and the surplus end drawn away through the suction tube. The clamp is then given an elliptical motion as shown in Fig. 14 to wrap the protruding weft end around a needle hook which then acts as previously described to draw the weft end into the next succeeding shed.
Patent GB-1474180-A (GB)
Title: Acoustic surface wave devices
IPC: H03H9/02
Filed: 1973-10-12
Abstract: 1474180 Acoustic surface wave devices MULLARD Ltd 26 July 1974 [12 Oct 1973 (2)] 47743/73 and 47744/73 Heading H3V The orientation of the propagation surface and the direction of the propagation axis relative to the crystallographic axes in a monocrystalline piezoelectric surface wave device are selected to reduce the disturbances due to bulk waves in the output of the device. In addition to scatter and/or absorb bulk waves, angled end faces, absorbent material 4, 5 and/or recesses (10, Fig. 2, not shown) in the lower surface are provided. In one embodiment the crystal axes are oriented so that longitudinal bulk waves travelling parallel to the surface waves are neither generated nor detected by interdigitated transducers 2, 3 and so that each of the two shear bulk waves travelling along the device has its direction of particle movement inclined to the surface which, together with the separation of the transducers, ensures a negligible effect on the output of the device. Alternatively the particle motion of one of the shear waves may be parallel to the surface but in a direction so as not to be coupled with the transducers. The surface may be parallel to the crystallographic (110) plane, or an equivalent plane, with propagation in the [001] direction, or a respective equivalent direction. Alternatively the surface may be parallel to the (100) plane, or an equivalent plane, with propagation occurring in the [0#] or [011] directions, or respectively equivalent directions. The piezoelectric material 1 may be lithium niobate, bismuth silicon oxide or bismuth germanium oxide, and after application of the transducers &c. it may be encapsulated. The device is preferably used as an intermediate frequency filter in a colour T.V., but it may be used to provide a delay.
Patent GB-1420793-A (GB)
Title: Colourdisplay cathode ray tube
IPC: H01J31/20
Filed: 1973-10-12
Abstract: 1420793 Colour television tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 Oct 1973 [17 Oct 1972] 47749/73 Heading H1D In a shadow mask colour tube having phosphor stripes, the spacings between the centres of adjacent stripes, and between the three electron beams, are adjusted to take advantage of the fact that the seriousness of the subjective colour defect caused by mislanding of the electron beams decreases in the sequence: red beam on the green or blue phosphor; blue or green beam on the green or blue phosphor, respectively; and blue or green beam on the red phosphor. In Fig. 4, the width of the red stripe is increased at the expense of the adjacent blue and green stripes. In the black matrix screen shown in Fig. 6, the spacing between centres of the red stripes and the adjacent blue and green stripes is increased at the expense of the spacing between the green and blue stripes; in addition, the spacing between the impact areas of the red beam and both the green and blue beams is decreased with respect to the spacing between the blue and green impact areas. The observable colour defect may be still further reduced by positioning the red gun further from the blue gun than the green gun. The phosphor stripe spacings and beam impact spacings may be uniform in the centre of the screen and steadily increase to a difference of up to 20% at the periphery. Numerical data are provided. The phosphor screen may be produced by optical exposure of a photosensitive layer through the shadow mask, the desired spacings being obtained by suitable choice of light source positions. The shadow mask apertures may be interrupted by spaced reinforcing bridges, the phosphor stripes exhibiting corresponding interruptions.
Patent GB-1248853-A (GB)
Title: Optical apparatus for sensing angular motion
IPC: H03M1/00
Filed: 1969-09-29
Abstract: 1,248,853. Measuring displacements electrically. QUANTIC INDUSTRIES Inc. 29 Sept., 1969 [20 Nov., 1968], No. 47787/69. Heading G4U. [Also in Division G2] An optical encoder for sensing angular motion of a shaft uses MoirÚ fringe techniques. A slitted mask 12 is illuminated by a lamp 13 and condenser 14 and the beam is collimated by a lens 16 which directs it to a double reflecting system such as a Porro prism 11 as shown, or an Amici prism or arrangement of two mirrors (not shown), attached to the shaft 10. The reflected light then re-traverses lens 16 and is focused via a semi-reflector 17 on a second slitted mask 18. The mask 12 may comprise an outer ring (23), Fig. 2 (not shown), of regularly spaced slits and an inner ring (24) of irregularly spaced slits; the mask 18 would then comprise a similar outer ring (26, Fig. 3, not shown) with regularly spaced slits at two portions (29, 31) diametrically opposite on the ring, the spacings of these slits being slightly different from the spacings of the corresponding slits on mask 12, together with an inner ring with slits arranged over a portion (32) in a pattern which is the photographic negative of the irregular pattern of the inner ring of mask 12. Photodetectors 19, 21 sense the changing MoirÚ pattern as the shaft 10 and reflector 11 rotate, whilst photodetector 20 provides a reference position of the shaft since. The signals from the outer detectors 19, 21 may be added (Fig. 6) and divided by two and the average value fed to a digital counter which gives an output representative of the angular movement of the shaft. A " transmission prism " arrangement is described with reference to Fig. 5 (not shown).
Patent GB-1453720-A (GB)
Title: Mould release composition
IPC: C10N20/02
Filed: 1973-10-16
Abstract: 1453720 Silicone tyre-moulding release compositions SWS SILICONES CORP 16 Oct 1973 [16 Oct 1972] 48136/73 Heading C3T [Also in Division C5] A release composition for tyre-moulding comprises (a) 1-25 wt. per cent of a polyorganosiloxane of 1000-600,000 cS/25‹ C., (b) 0À1-10 wt. per cent of a polyorganosiloxane bearing amino or ammonium groups, (c) 20-70 wt. per cent of mica of 60-600 Tyler mesh, (d) 0À1-5À0 wt. per cent of a thickening agent, (e) 2-25 wt. per cent of a polyglycol and (f) 20-60 wt. per cent of a hydrocarbon solvent of b.p. not more than 200‹ C., and optionally (g) 0À1-5À0 wt. per cent of a wetting agent for (d). In Examples 1 and 5-7 (b) is prepared by equilibration of [Me 2 SiO] 8  with H 2 N.C 2 H 4 .NH.C 3 H 6 .Si(OMe) 3  i.p.o. KOH, addition of i.p.o. Pt, and hydrolysis of i.p.o. a polydimethylsiloxane diol. In Examples 2-4 these are added to (d) naphtha, followed by HCl (omitted in Example 4), mica (c), bentonite (d), methanol (g), a polyethylene-propylene glycol of MW 2600 or 3000 (e), and a polydimethylsiloxane of 100,000, 250,000, or 300,000 cS/25‹ C.; the filtered composition is used as bag lubricant in tyre manufacture.
Patent GB-1473202-A (GB)
Title: Washing and/or bleaching compositions containing silicate  cation exchangers
IPC: C11D3/12
Filed: 1974-04-10
Abstract: 1473202 Textile washing preparations HENKEL & CIE GmbH 10 April 1974 [13 April 1973 17 Sept 1973 9 Nov 1973] 48279/76 Divided out of 1473201 Heading C5D [Also in Division D1] Textiles are washed and/or bleached by treatment with an aqueous suspension of a synthetic, X-ray amorphous cation exchanger of formula wherein Cat is a cation of valency n exchangeable with calcium, x is 0À7 to 1À5, Me is boron or aluminium and y is 0À8 to 6, which cation exchanger has a calcium binding capacity of at least 50 mg. CaO/g. Cation exchangers specified include sodium aluminium silicates. Other ingredients specified include alkylbenzene sulphonate, sulphonated methyl ester of hydrogenated palm kernel fatty acid, soap, tallow alcoholethylene oxide adduct, oleyl alcohol ethylene oxide adduct, sodium carbonate, sodium silicate, sodium tripolyphosphate, sodium sulphate, carboxymethyl cellulose, brightener, sodium perborate trihydrate, tetraacetyl glycoluril (bleach activator), sodium citrate, EDTA and magnesium silicate.
Patent GB-1367777-A (GB)
Title: Thickening apparatus
Inventor: GINAVEN M E
IPC: B01D35/28
Filed: 1971-10-18
Abstract: 1367777 Pulp thickener BAUER BROS CO 18 Oct 1971 [19 Oct 1970] 48372/71 Heading B1D Pulp or sewage sluc ge is passed vertically upwards and downwards from inlet 15 to outlet 31 through an elonga :ed duct, at least parts of Which are permeable to allow the liquid content to pass outward thereof into housing 10 and to outlet 33. As ; hown the duct comprises two vertical portions 9, 20 of flat cross-section, whose major sides are formed of screen material (Figs. 3, 4, not hown) defining apertures of arouate form whose apices are displaced in the direction of flow. Portions 19, 20 are connected by an impervious section 22. A plurality of inverted U duct, may be connected in parallel or series in one housing. Fig. 5 (not shown) illustrates how the liquid extracted from the thickener may be recycled to make fresh slurry. Valve (3@) enables a back pressure to be maintained in the duct, and plates 34 are removable for maintenance. The screen material is constructed as removable panels.
Patent GB-1218373-A (GB)
Title: A fastener for driving into hard material such as iron, concrete or the like
IPC: F16B19/14
Filed: 1968-10-15
Abstract: 1,218,373. Fasteners. HILTI A.G. 15 Oct., 1968 [2 Nov., 1967], No. 48730/68. Heading F2H. In a fastener, such as a bolt or nail, having a head 2, shank 3 and tip 5 and provided with a collar 4 on the shank 3 for driving by means of a plunger of a power operated tool 22 into iron or concrete 25, the collar 4 is disposed on the shank 3 adjacent the tip 5 and at least part of the shank 3 between the collar 4 and the head 2 is resiliently flexible.
Patent GB-1063809-A (GB)
Title: Bi-directional control circuit
Inventor: DUDDRIDGE GEOFFREY
IPC: H02M5/253
Filed: 1964-12-02
Abstract: 1,063,809. Firing bidirectional semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Nov. 26, 1965 [Dec. 2, 1964], No. 48965/64. Heading H3T. [Also in Division H2] A load, e.g. an electric motor in a model train, is energized with unidirectional current from an A.C. source via a bidirectional five. layer controllable semi-conductor device (TC1, Fig. 2, not shown), the direction of the current depending upon the timing of triggering pulses, which is dependent on the polarity of a D.C. signal developed across a capacitor (C1) by diodes (D1, D2) and a control potentiometer (R1). The polarity across (C1) determines which of two transistors (T1), (T2) conducts and hence whether the device (TC1) is triggered during positive or negative half-cycles. It is stated that the triggering circuit may alternatively comprise two complementary four-layer devices or a five-layer device or gating diodes and avalanche transistors.
Patent GB-1452952-A (GB)
Title: Power-adjustable chair
IPC: A61G15/02
Filed: 1973-10-22
Abstract: 1452952 Dental chairs SIEMENS AG 22 Oct 1973 [21 Oct 1972 2 Aug 1973]  49118/73 Heading A4J [Also in Divison H1] Electric switches 19, 20, 21 or 31, 32, 33 for controlling movement of the adjustable parts of a dental chair are positioned on the rear of the backrest between the upper edge and an imaginary line spaced a distance pf 10cm-15cm below the upper edge. The chair may be displaced automatically into a pre-selected position by a control device which is triggered when a switching member (52), Fig. 5 (not shown) is acted on by a push button 38, 39 or 40.
Patent GB-1344894-A (GB)
Title: Connecting device for fluid circuits
IPC: F16K1/38
Filed: 1971-10-25
Abstract: 1344894 Pipe couplings; valves SOC SBF 25 Oct 1971 [30 Oct 1970] 49442/71 Headings F2G and F2V An interchangeable core 6 interconnects a selection of the four or more radial passageways 2, 2a, 2b and 2c formed in a mounting block 1, so that, on unscrewing the end fittings 14, 15 and 16, the core 6 may be withdrawn from the block 1, by sliding it in an axial direction. A replacement core may effect other interconnections to change the fluid circuit. The core is preferably of stainless steel to resist corrosion and high pressure. The pintle valve 10 may be replaced by a further pipe end fitting or by a check valve (30, Fig. 2, not shown).
Patent GB-1400599-A (GB)
Title: Ferromagnetic core structures for transformers or choke coils
IPC: H01F27/245
Filed: 1972-10-26
Abstract: 1400599 Transformers and inductors SMIT NIJMEGEN ELECTROTECHNISCHE FABRIEKEN NV 26 Oct 1972 [27 Oct 1971] 49504/72 Heading HIT In a transformer or inductor core in which legs and yokes form two adjacent rectangular windows 7, 8, and each leg or yoke comprises two side-by-side laminations (such as 1 and 2, 3 and 4, 5 and 6, 9 and 10, 11 and 12) per layer, and wherein the inner yoke member 9 for window 8 joins leg member 6 in an oblique joint 13, and the outer yoke member 10 for window 8 joins the outer yoke member 12 in a parallel oblique joint 14 the length of member 10 is made longer (and 12 consequentially shorter) than would be necessary if joints 13, 14, were to be co-linear. The result leaves an unfilled spaced 17. The arrangement facilitates assembly, wherein the last of the four lamination 9, 10, 11, 12 to be positioned is lamination 10 which if it is too long leaves a gap between 9 and 10 which causes no great disadvantage. The laminations are grain-oriented material, and layers or sets of layers are inverted as shown in dotted line. An arrangement wherein the angles of abutment are other than 45 degrees is also disclosed (Fig. 2, not shown).
Patent GB-1362662-A (GB)
Title: Electric batteries formed of stacked lamina-type cells
IPC: H01M6/48
Filed: 1971-11-23
Abstract: 1362662 Batteries comprising lamina-type Cells ESB Inc 23 Nov 1971 [21 Dec 1970 (5)] 49741/73 Divided out of 1362661 Heading H1B The disclosure is identical to that of Specification 1,362,661 but the claims omit the method claimed in that Specification.
Patent GB-1188469-A (GB)
Title: Combined Articulated and Ackerman Steering System for Vehicles
IPC: B62D5/09
Filed: 1968-10-22
Abstract: 1,188,469. Steering articulated vehicles. BALDWIN-LIMA-HAMILTON CORP. 22 Oct., 1968 [26 Oct., 1967], No. 50086/68. Heading B7H. In an articulated vehicle comprising two frames 11, 12, which are pivotable relative to each other by steering means 51, 52, and support means 15, 16, (17), (18), (Fig. 1, not shown) for each frame, the support means for one frame 11 comprising at least one pair of wheels 15 pivotable about vertical axes relative to the frame 11 by steering means 30, 31, a steering system comprises a manual steering member 71 and control means responsive thereto to actuate the steering means 30, 31 and 51, 52 sequentially or selectively. An interlock prevents both sets of means being rendered inoperative together. Normally on operation of the manual steering member 71 a hand pump actuates a master control valve 80 which expands or contracts a " master " cylinder 75, for steering in one or the other sense, the cylinder 76 and piston-rod 77 of the master cylinder 75 being secured to an " Ackerman " and indexer 88 and " articulated " indexer 89 respectively. Due to the centralizing spring 98 of the " Ackerman " indexer having a less stiff preload, by a factor of four, than the centralizing spring of the " articulated " indexer the former is moved and, through a connecting link 115, operates a control valve 72 which supplies pressure fluid from a pump 112 to the rams 30, 31 which are connected between the axles (21) and (26), (Fig. 3, not shown), carrying the wheels 15, 16 and the associated track rods (23), (28). There is a feedback linkage (117a)-(120) to the control valve 72. On further movement of the master cylinder 75 the indexer 89 is moved to actuate, through a link (116), a bellcrank (117), (Fig. 4, not shown), pivoted on the articulation axis and a rod (93), the control valve 73 on the other frame. The control valve controls the supply of pressure fluid to and from the rams 51, 52 and the link (116) and bellcrank (117) act as a feedback of the frame positions. Each indexer has a groove which is engageable by a pin under the control of manual electric switches to cut out either steering action, an interlock preventing both being cut out together.
Patent GB-1385139-A (GB)
Title: Screws
IPC: E04D3/36
Filed: 1973-10-29
Abstract: 1385139 Self-tapping screws; drills W A DEUTSHER PTY Ltd 29 Oct 1973 [30 Oct 1972] 50246/73 Headings B3N and B3C A screw, e.g. for fixing soft sheet material A to a harder support material B, comprises a drill point 11, a head 10, a single screw threaded shankportion 8, and an unthreaded shank portion 6 between the head 10 and the threaded portion 8 which includes at least one integral outwardly extending wing member 13 operable to enlarge a hole in the sheet material A after passage therethrough of the threaded portion. In use, e.g. for fixing acrylic plastics sheeting A to metal purlings B, the drill point 11 makes a hole in the sheeting A, then primary wings (12), Fig. 1, not shown) adjacent the drill point open out the hole to a clearance size on the threaded shank part 8, the drill point 11 then engages the hard metal B and drills a hole but the primary wings (12) are broken off by the hard metal to allow the threaded part 8 to thread the hole in the metal B, the wing or wings 13 then cut a large clearance hole in the plastic sheet A to allow for thermal expansion. A sealing washer C is placed under the head 10. The wings 13 are spaced so that the enlarged clearance hole in the plastic sheet A is substantially cut by manual pressure before the threaded shank part 8 is fully engaged in the metal purling B. The wings 13 have inclined cutting edges 14 with a cutting rake angle, and inclined clearance faces 15. Alternatively the wings 13 may have a forwardly projecting cutting tip at their extremity for trepanning the hole.